DTC P2118: Throttle Actuator Current Range/Performance Problem

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Slowly press the accelerator pedal to the floor.
Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2118 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the ECM/PCM.
Turn the ignition switch to LOCK (0).
Disconnect the throttle actuator control module 16P connector (see THROTTLE ACTUATOR CONTROL MODULE REPLACEMENT ).
Measure resistance between throttle actuator control module 16P connector terminals No. 1 and No. 8.
Is there about 1.0 Ω, or less?

YES - Go to step 8.

NO - Substitute a known-good throttle actuator control module (see THROTTLE ACTUATOR CONTROL MODULE REPLACEMENT ), then go to step 11 and recheck. If DTC P2118 is not indicated, replace the original throttle actuator control module (see THROTTLE ACTUATOR CONTROL MODULE REPLACEMENT ), then go to step 11.

Fig 1: Measuring Resistance Between Throttle Actuator Control Module 16P Connector Terminals No. 1 & No. 8
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the throttle body 6P connector.
At throttle body side, measure resistance between throttle body 6P connector terminals No. 5 and No. 6 with the throttle fully closed.
Is there about 1.0 Ω or less?

YES - Go to step 10.

NO - Repair short in the wires between the throttle body and the throttle actuator control module (motor drive lines), then go to step 11.

Fig 2: Measuring Resistance Between Throttle Body 6P Connector Terminals No. 5 & No. 6 With Throttle Fully Closed
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the ECM/PCM with the HDS.
Do ECM/PCM IDLE LEARN PROCEDURE .
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II).
Slowly press the accelerator pedal to the floor.
Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2118 indicated?

YES - Check for poor connections or loose terminals at the throttle body and the throttle actuator control module, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to INDICATED DTCS TROUBLESHOOTING .